812047396191 has 8 divisors (see below), whose sum is σ = 1083720469680. Its totient is φ = 540869626752.

The previous prime is 812047396133. The next prime is 812047396211. The reversal of 812047396191 is 191693740218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 812047396191 - 2³⁰ = 810973654367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812047397191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123822186 + ... + 123828743.

It is an arithmetic number, because the mean of its divisors is an integer number (135465058710).

Almost surely, 2^812047396191 is an apocalyptic number.

812047396191 is a deficient number, since it is larger than the sum of its proper divisors (271673073489).

812047396191 is a wasteful number, since it uses less digits than its factorization.

812047396191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247652025.

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 812047396191 in words is "eight hundred twelve billion, forty-seven million, three hundred ninety-six thousand, one hundred ninety-one".